Fixing the flaky test that is caused by certificate file changes.

driver/src/test/java/org/neo4j/driver/v1/integration/TrustCustomCertificateIT.java

@@ -18,16 +18,10 @@
  */
 package org.neo4j.driver.v1.integration;
 
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.RegisterExtension;
 
 import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.StandardCopyOption;
 import java.util.function.Supplier;
 
 import org.neo4j.driver.v1.Config;
@@ -36,6 +30,7 @@
 import org.neo4j.driver.v1.Session;
 import org.neo4j.driver.v1.StatementResult;
 import org.neo4j.driver.v1.exceptions.SecurityException;
+import org.neo4j.driver.v1.util.CertificateExtension;
 import org.neo4j.driver.v1.util.CertificateToolUtil.CertificateKeyPair;
 import org.neo4j.driver.v1.util.DatabaseExtension;
 import org.neo4j.driver.v1.util.ParallelizableIT;
@@ -51,28 +46,7 @@
 class TrustCustomCertificateIT
 {
     @RegisterExtension
-    static final DatabaseExtension neo4j = new DatabaseExtension();
-
-    private static Path originalKeyFile;
-    private static Path originalCertFile;
-
-    @BeforeAll
-    static void beforeAll() throws IOException
-    {
-        originalKeyFile = Files.createTempFile( "key-file-", "" );
-        originalCertFile = Files.createTempFile( "cert-file-", "" );
-
-        Files.copy( neo4j.tlsKeyFile().toPath(), originalKeyFile , StandardCopyOption.REPLACE_EXISTING);
-        Files.copy( neo4j.tlsCertFile().toPath(), originalCertFile, StandardCopyOption.REPLACE_EXISTING );
-    }
-
-    @AfterAll
-    static void afterAll() throws Exception
-    {
-        neo4j.updateEncryptionKeyAndCert( originalKeyFile.toFile(), originalCertFile.toFile() );
-        Files.deleteIfExists( originalKeyFile );
-        Files.deleteIfExists( originalCertFile );
-    }
+    static final DatabaseExtension neo4j = new CertificateExtension();
 
     @Test
     void shouldAcceptServerWithCertificateSignedByDriverCertificate() throws Throwable

driver/src/test/java/org/neo4j/driver/v1/integration/TrustOnFirstUseIT.java

@@ -30,6 +30,7 @@
 import org.neo4j.driver.v1.Session;
 import org.neo4j.driver.v1.StatementResult;
 import org.neo4j.driver.v1.exceptions.SecurityException;
+import org.neo4j.driver.v1.util.CertificateExtension;
 import org.neo4j.driver.v1.util.CertificateToolUtil;
 import org.neo4j.driver.v1.util.DatabaseExtension;
 import org.neo4j.driver.v1.util.ParallelizableIT;
@@ -46,7 +47,7 @@
 class TrustOnFirstUseIT
 {
     @RegisterExtension
-    static final DatabaseExtension neo4j = new DatabaseExtension();
+    static final DatabaseExtension neo4j = new CertificateExtension();
 
     @Test
     void shouldTrustOnFirstUse() throws Throwable

driver/src/test/java/org/neo4j/driver/v1/util/CertificateExtension.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2002-2019 "Neo4j,"
+ * Neo4j Sweden AB [http://neo4j.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Neo4j is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.neo4j.driver.v1.util;
+
+import org.junit.jupiter.api.extension.AfterAllCallback;
+import org.junit.jupiter.api.extension.BeforeAllCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+
+public class CertificateExtension extends DatabaseExtension implements BeforeAllCallback, AfterAllCallback
+{
+    private static Path originalKeyFile;
+    private static Path originalCertFile;
+
+    @Override
+    public void beforeAll( ExtensionContext extensionContext ) throws Exception
+    {
+        originalKeyFile = Files.createTempFile( "key-file-", "" );
+        originalCertFile = Files.createTempFile( "cert-file-", "" );
+
+        Files.copy( tlsKeyFile().toPath(), originalKeyFile , StandardCopyOption.REPLACE_EXISTING);
+        Files.copy( tlsCertFile().toPath(), originalCertFile, StandardCopyOption.REPLACE_EXISTING );
+    }
+
+    @Override
+    public void afterAll( ExtensionContext extensionContext ) throws Exception
+    {
+        updateEncryptionKeyAndCert( originalKeyFile.toFile(), originalCertFile.toFile() );
+        Files.deleteIfExists( originalKeyFile );
+        Files.deleteIfExists( originalCertFile );
+    }
+}